AirHint found the following cheapest return flights from London (LHR) to Hanoi (HAN) in January 2026 (see full year).

Return flights

21 Jan - 06 Feb	Air China
24 Jan - 08 Feb	Air China
25 Jan - 09 Feb	Air China
28 Jan - 07 Feb	Air China
23 Jan - 03 Feb	Air China
02 Jan - 03 Feb	Air China
23 Jan - 06 Feb	Air China
04 Jan - 19 Jan	Air China
07 Jan - 21 Jan	Air China
08 Jan - 15 Jan	Aegean Airlines
21 Jan - 28 Jan	Air China
21 Jan - 27 Jan	Etihad Airways
07 Jan - 28 Jan	Air China
02 Jan - 02 Feb	Air China
29 Jan - 23 Feb	Austrian Airlines
16 Jan - 06 Feb	Air China
16 Jan - 26 Jan	Oman Air
02 Jan - 17 Jan	Oman Air
11 Jan - 26 Jan	Oman Air
24 Jan - 31 Jan	Singapore Airlines

Also check the deals for one-way flights from London to Hanoi in January.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Hanoi in January from 538€

Return flights